Front brake back / splash plates replacement

Andrew said:
Morning,

Stilsons might also fail if the heads were dome shaped as you describe, but here is a picture anyway.

https://www.amazon.co.uk/Ridgid-31000-6-Inch-Straight-Wrench/dp/B0009GF3YS

You are right about the bolt heads being small, surprising. I would expect a 10mm head on a 6mm thread but these are 8mm, some kind of unusual reduced DIN. My stainless replacements are 10mm head but like the original are 6mm deep and there is plenty of room for them in the depressed hole hollows of the splash guard.

Andy
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Andy sorry to jump in, re the baby stillys, I’m sure I’ve seen a sort of ring spanner/ratchet tool which works on the same principal of the more leveridge the more grip, it slips over the head of the bolt/nut and as you turn a second serrated grip wheel tightens on the nut, and I think they came in different sizes, ring any bells with you ?
 
Kramretsimis said:
Andy sorry to jump in, re the baby stillys, I’m sure I’ve seen a sort of ring spanner/ratchet tool which works on the same principal of the more leveridge the more grip, it slips over the head of the bolt/nut and as you turn a second serrated grip wheel tightens on the nut, and I think they came in different sizes, ring any bells with you ?
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Very vaguely, I remember while in a garage workshop a professional mechanic swore by a certain make of sockets for damaged hex heads that rarely failed to get one out, but beyond that nothing, it was a long time ago.

I did note that just the other day Weetank2 advocated the use Metrinch sockets, professional grade I guess but I can see why by their design they would cope better with hex heads with damaged corners. Must write a letter to Santa Claus...


Andy
 
Thank you Sco and Philward for this tip of using the chisel and hammering them off. I had fought the little devils for an hour and had paused - reading this saved my day so thank you both again.
 
philward said:
That's worth knowing about thank you. Super glue your spanner to your bolt head. I'm going back out shortly to see if there is any bolt head to glue to. Looked very badly corroded yesterday.
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Would a set of IRWIN sockets helped? Also could you apply some heat on the bolt. Then spray with penetrating oil?? I bought the IRWIN sets years ago when I had an old army Landover from 60s. There are two sets from memory so do most sizes from memory. Worked a treat 👍 hope it all got sorted 😁

Irwin 5 Piece Bolt Grip Set - Machine Mart - Machine Mart

www.machinemart.co.uk www.machinemart.co.uk
 
I think this has already been said but my experience seems to have been similar to most others. Screw heads rounded off and rusty . Couldn't get any purchase even with Irwin sockets ( which I normally regard as one of my best buys would give up a lot of tools before I did without these). Finally by chance I managed to lever a bit of the backplate off from behind one of the screws and of course then there is no tension on the threads so it's just the rust holding it. Doused with penetrating oil and then mole grips to loosen . Hold breath and if you are lucky move onto the next. I bought from autodoc all 4 backplates and did them as I did each set of brakes. Split it over two separate sessions to allow me to get it done. Cleaned threads with a tap and then greased stainless bolts to refit. I meant to powder coat them before fitting but didn't at about a £10 a piece I have to replace them sometime I can live with that. If I waited until I get my powder coat out and do that it will never get done!

Sent from my Nokia C01 Plus using Tapatalk
 
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